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JEE MAIN 2026 Crash Course
NEET 2026 Crash Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
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किसी आयत की लम्बाई तथा चौड़ाई को 30% तथा 20% बढ़ाया गया। नये आयत का क्षेत्रफल, आयत के क्षेत्रफल से कितना % वृद्धि ज्ञात करें?
A. `46%`
B. `66^`
C. `42%`
D. `56%`

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Best answer
Correct Answer - D
Length `10to13`
`ul("Breadth" 10 to 12)`
Area `100 to 156`
क्षेत्रफल में प्रतिशत वृद्धि
`=(156-100)/100xx100=56%`

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